Tutorials on how to use all benefits of VoiceThread: What is it, How to Share, Video Doodling, Microphone setup, Embeddng VoiceThread, Comment Moderation, Identities, etc.
Slideshare is a site where you can host your presentations and share them with others. Presentations can be linked to at the site itself or else embedded in a web page. You can also synchronise an MP3 audio file (podcast) with the slideset to create a slidecast - a more powerful way of distributing presentations/tutorials.